Earlier, it was easy to earn ₹750 on platinum DC. Simply pay ₹75000 to your SBI Card through HDFC Billpay, and the transaction will fail if the total outstanding is <75K.
The good thing was that the debited money used to be reversed in 2 working days, and they awarded rewards points even for a failed transaction.
Now that they have patched Billpay, failing transactions on Unipay/Setu is a gamble, as I had to chase Canara Bank/BBPS support for 10 days straight and received no help from them. There's no dedicated team for Canara Setu, and if your transaction fails, the bank won't help as you don't have a bank account with them. Chargeback through the source bank can take a sweet amount of time, and BBPS support is shitty as well. I had to raise a complaint with Canara Bank Headquarters and then get my refund in 2 working days.
As long as IDFC is giving points on DCs, Millennia is fine for me.